Results 11 to 20 of about 316 (101)

A series expansion of a logarithmic expression and a decreasing property of the ratio of two logarithmic expressions containing cosine

open access: yesOpen Mathematics, 2023
In this study, by virtue of a derivative formula for the ratio of two differentiable functions and with aid of a monotonicity rule, the authors expand a logarithmic expression involving the cosine function into the Maclaurin power series in terms of ...
Li Yan-Fang, Qi Feng
doaj   +1 more source

q-Functions and Distributions, Operational and Umbral Methods

open access: yesMathematics, 2021
The use of non-standard calculus means have been proven to be extremely powerful for studying old and new properties of special functions and polynomials.
Giuseppe Dattoli   +3 more
doaj   +1 more source

Some Inequalities for Generalized Hyperbolic Functions

open access: yesMoroccan Journal of Pure and Applied Analysis, 2020
In this paper, we establish several inequalities involving certain generalizations of the hyperbolic functions. The established results serve as generalizations of some known results in the literature.
Nantomah Kwara, Prempeh Edward
doaj   +1 more source

Geometric convexity of the generalized sine and the generalized hyperbolic sine [PDF]

open access: yes, 2013
In the paper, the authors prove that the generalized sine function $\sin_{p,q}(x)$ and the generalized hyperbolic sine function $\sinh_{p,q}(x)$ are geometrically concave and geometrically convex, respectively.
Jiang, Wei-Dong, Qi, Feng
core   +1 more source

Monotonicity results and bounds for the inverse hyperbolic sine [PDF]

open access: yes, 2009
In this note, we present monotonicity results of a function involving to the inverse hyperbolic sine.
B-N Guo   +14 more
core   +2 more sources

Derivative Polynomials and Closed-Form Higher Derivative Formulae [PDF]

open access: yes, 2009
In a recent paper, Adamchik [V.S. Adamchik, On the Hurwitz function for rational arguments, Appl. Math. Comp. 187 (2007) 3--12] expressed in a closed form symbolic derivatives of four functions belonging to the class of functions whose derivatives are ...
Cvijović, Djurdje
core   +2 more sources

On the Fresnel sine integral and the convolution

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 37, Page 2327-2333, 2003., 2003
The Fresnel sine integral S(x), the Fresnel cosine integral C(x), and the associated functions S+(x), S−(x), C+(x), and C−(x) are defined as locally summable functions on the real line. Some convolutions and neutrix convolutions of the Fresnel sine integral and its associated functions with x+r, xr are evaluated.
Adem Kılıçman
wiley   +1 more source

A Note on the Derivatives of Isotropic Positive Definite Functions on the Hilbert Sphere [PDF]

open access: yes, 2019
In this note we give a recursive formula for the derivatives of isotropic positive definite functions on the Hilbert sphere. We then use it to prove a conjecture stated by Tr\"ubner and Ziegel, which says that for a positive definite function on the ...
Jäger, Janin
core   +3 more sources

On the Fresnel integrals and the convolution

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 41, Page 2635-2643, 2003., 2003
The Fresnel cosine integral C(x), the Fresnel sine integral S(x), and the associated functions C+(x), C−(x), S+(x), and S−(x) are defined as locally summable functions on the real line. Some convolutions and neutrix convolutions of the Fresnel cosine integral and its associated functions with x+r and xr are evaluated.
Adem Kiliçman, Brian Fisher
wiley   +1 more source

On some trigonometric power sums

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 30, Issue 3, Page 185-191, 2002., 2002
Using the generating function method, the closed formulas for various power sums of trigonometric functions are established. The computer algebra system Maple is used to carry out the complex calculations.
Hongwei Chen
wiley   +1 more source

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